HALOGUARD® IIIMULTI-POINT, MULTI-GAS MONITOR

INSTRUCTION MANUAL

11285 Elkins Road, Bldg. H-1Roswell, GA 30076TEL: 770-667-3865FAX: 770-667-3857www.thermalgas.com

****IMPORTANT****USER MUST READ, FULLY UNDERSTAND AND FOLLOW ALL INSTRUCTIONS PROVIDED HEREIN BY THE MANUFACTURER FOR THE INSTALLATION AND OPERATION OF THE HALOGUARD III MONITOR. USE OF THE INSTRUMENT IN A MANNER NOT SPECIFIED HEREIN MAY IMPARE THE PROTECTION PROVIDED BY THE INSTRUMENT.

TABLE OF CONTENTS

Page1. Unpacking Instructions-------------------------------------------------------------- 32. Before Installation-------------------------------------------------------------------- 33. Function of LED’s, Pushbuttons, & LCD Display Information-------------- 44. Installation----------------------------------------------------------------------------- 65. Set-Up & System Configuration--------------------------------------------------- 86. Installation of Optional Remote IR Sensor Module---------------------------- 97. Calibration, Testing, & Trouble Shooting---------------------------------------- 108. Service & Assistance---------------------------------------------------------------- 109. Maintenance, Obtaining Replacement Parts------------------------------------- 11

10. Specifications & Factory Settings------------------------------------------------- 12

FIGURES & APPENDICES

Page1. Typical Area Monitoring Installation--------------------------------------------- 32. Mounting Dimensions--------------------------------------------------------------- 43. LCD Display Information----------------------------------------------------------- 44. Haloguard III Layout Drawing----------------------------------------------------- 55. Analog Output Terminal Block Connections------------------------------------ 66. Circuit Board Layout---------------------------------------------------------------- 77. Setup & Configuration Jumper Settings------------------------------------------ 88. Remote Sensor Expansion Module Wiring Connection----------------------- 99. Remote Sensor Expansion Module Circuit Board------------------------------ 9

10. Replacement Parts-------------------------------------------------------------------- 1111. Accessories---------------------------------------------------------------------------- 1112. Initial Factory Settings for Gas Type & Alarm PPM Levels------------------ 1213. APPENDIX A - Analog Output Data Translation------------------------------ 13

Rev 1.2h 2

UNPACKING INSTRUCTIONS

Haloguard monitors are carefully packed, inspected and delivered to the carrier in good condition. If damage occurs in transit it is the responsibility of the carrier. Carefully inspect the unit upon receipt. Any damage should be reported to the carrier and an inspection requested. After inspection by the carrier and your receipt of their acknowledgment as to the damage, contact us for a return authorization (RMA). We cannot file claims for damaged goods on your behalf, but we will assist you in any way we can. In order to expedite our work, please provide serial number and model number when you call.

WE CANNOT ACCEPT RETURNS WITHOUT PRIOR APPROVAL.

BEFORE INSTALLATION

1. Remove Haloguard III from carton. Check contents against packing list. If shipment is incomplete, contact us immediately.

2. Select a site for the installation:a. Power requirements: Provide a clean source of power, 100-240VAC, 50/60 Hz, single phase 15A

minimum. AC Line conditioning equipment may be necessary in some locations.b. Sample tube pick-up should be located near potential leaks in a quiet area or downstream from

leak source in area with air movement.c. Sample tube pick-up should be located 18” - 24” above finished floor. If using optional scanner,

locate sample tubes at points near all chiller locations. Make sure each sample tube is equipped with an end of line filter.

d. Make sure the area selected is not subject to flooding, potential impact or severe ambient temperature and humidity changes (i.e. boiler blow-down or near roll-up doors).

e. Locate the unit so the front panel is easily seen and accessed for service and calibration, and that access to, and operation of the disconnect device is not restricted.

f. Wide band infrared detector is non-selective and may respond to the presence of other gases if interfering gas reaches a high concentration. For accurate refrigerant leak detection select a location free from above vapors. Contact us for specific gas interference.

3. The Haloguard III should be installed indoors, about five feet (eye level) above the floor and at a location easily visible to operators, in an area with minimal vibration, and with temperature and humidity changes similar to the sample pick-up location. DO NOT MOUNT DIRECTLY TO CHILLER. The vibration may affect the operation of the unit, resulting in erroneous readings.

Figure 1-Typical Area Monitoring Installation

Rev 1.2h 3

Remote A/V Alarm

Sample Point

Chillers

HaloguardPanel & Local

A/V Alarm

Remote A/V Alarm

Exhaust FanSample Point

Sample Point

****IMPORTANT****CONSULT LOCAL AND NATIONAL ELECTRICAL CODES FOR ANY SPECIAL

REQUIREMENTS OR RESTRICTIONS BEFORE INSTALLING HALOGUARD III.

FUNCTION OF LED’S, PUSHBUTTONS, and LCD DISPLAY INFORMATION

1. READY LED - Steady LED means Haloguard III is measuring ppm; blinking indicates otherwise.

2. POWER LED – Green LED indicates Haloguard III is receiving power.3. FAULT LED – Indicates malfunction. LCD displays specific type of failure (See Figure 3).4. ALARM 1, ALARM 2, ALARM 3 LED’s - Adjustable Alarm levels & relays - Factory set for

particular refrigerant (See Figure 12). Alarm levels are user adjustable as follows:

MEASURMENT RANGE

1 PPM INCREMENTS

10 PPM INCREMENTS

0 - 1000 ppm 50 – 100 ppm 100 – 1000 ppm

5. MANUAL (scan) push-button – Allows manual scan of last ppm reading for all channels.6. SILENCE/ RESET push-button - Silences alarms and disables relays for 20 minutes; used to

manually acknowledge alarms set to LATCH mode. LCD displays RESET/SILENCE with 20-minute countdown. Alarms are automatically reactivated if alarm condition is not corrected.

7. Optional Display Features: TWA Integration – Haloguard III calculates an 8-hr. Time Weighted Average (TWA), displays this value on LCD, activates ALARM 1 LED and engages ALARM 1 relay if factory set value (50 ppm for R-123) is exceeded. Used for refrigerant gases with TLV-TWA’s less than 1000 ppm. TWA alarm is factory set and not user adjustable.

Rev 1.2h 4

LCD Brightness Adjustment

14 3/4”

11”

Figure 2- Mounting Dimensions

Figure 3 - LCD Display Information

Alarms- Alarm 1- 2- 3- 4- 5- 6- Reset- Fault- Reset/Silence

Set-up Messages - Set Channel (1-24)- Set Gas Type (R11,12,22,123,134)- Set Scan Rate: (1-10 seconds)- Test Alarm 123456 Fault- Set Alarm 123456 Latch On/Off Calibration Messages- Zero Calibrate, connect scrubber, (Follow on screen directions)- Span Calibrate; insert Span Key (from gas cal kit)

Channels 1 - 24 (Opt. Scanner Only)

Other MessagesL – Latched modeM – Manual scan mode

8 hr. TWA ppm (R-123)

Fault Messages- Chopper Failure- Discontinuity- Lamp Failure- Low Temperature- Flow Failure- Scanner Stop- Remote EE Error- Channel Error

Gas Type (R-11, R-12, R-22, R-123, R-134, etc.)

Concentration(ppm)

Rev 1.2h 5

Sample Tube InletSingle Inlet - Std.

2, 4, or 8 Inlets - Opt.All inlet lines must

have end of line filter.

Remote Alarm

Reset In

Analog/ Digital Output4-20mA, 0-5VDC - Opt.

RS-232 Serial Com - Opt.

Relay/Binary Output7 x 10A SPDT, Form C,

Contacts

Power In100/240Vac

50/60Hz

Manual (scan)Pushbutton

Silence/ ResetPushbutton

Std. Enclosure is 12” x 14” x 4.5”; NEMA 12

LCD Display

Local Audible Alarm –

Mounting Holes (4) x 0.25”dia.

Ready

Power

Fault

Alarm 3

Alarm 2

Alarm 1

Aux. Inputs and Remote IR Expansion Sensor Module In

Figure 4 - Haloguard III Layout Drawing

Air SampleOutlet

Local Strobe Light Alarm – Optional

INSTALLATION

1. Check power supply and determine best location. (See Section “BEFORE INSTALLATION”)2. Disconnect power before beginning.

Refer to figures 2, 3, 4, 5, and 6 before proceeding.

3. Installation a. Mounting Haloguard III

1. Securely mount the unit to a wall or support using the (4) mounting holes.2. Remove cover.3. Install sample tube to 18-24” above finished floor, install end of line filter assembly. Sample

inlet may be extended up to 300 Ft. with 0.125” OD x 0.093” I.D. nylon, copper or stainless steel tubing. When extending sample tubing:a. Keep sample lines as short as possible and free of kinks.b. Exhaust to atmosphere. DO NOT install any device that might restrict the flow.

4. Route sample inlet tubing through entry indicated (Figure 4) and insert into one-touch fitting provided. To release tubing for removal, push in plastic ring on end of one-touch fitting.

b. Wiring Connections: 1. Relay Terminals – Route wire through entry indicated (Figure 4). Remove safety cover.

Connect alarm relays NO or NC and COM as required (Figure 6).2. Power Supply Wiring - Route wire through entry indicated (Figure 4). Remove safety cover.

Power connections are made to the terminal block labeled VOLTAGE IN (Figure 6). Connect black LINE AC wire to Terminal L. Connect white NEUTRAL wire to terminal N. Connect GROUND wire to grounding lug on inside of enclosure. Auxiliary terminal block labeled VOLTAGE OUT is provided to power remote audible and strobe light alarms. This output is not fused. Limit load to 12A max total. Connect through alarm relays (Figure 6) as required. Replace safety cover.

**WARNING** analog output is a driven signal; do not connect any wire with voltage or current to analog output terminals.

3. Analog Output (Optional) – Two analog outputs are provided for connection to remote recording devices; PPM ANALOG OUTPUT is for gas concentration and Fault info; CHANNEL ANALOG OUTPUT is for channel number (Figure 6). See “APPENDIX A” for analog output translation data. Connect 18 gage twisted, shielded pair as follows - maximum length 300 ft. for V or 2000 ft. for I. Connect shield to GND on Haloguard IR side only.

Analog Output Range Terminal Position0-10VDC V and GND4 - 20mA I and GND

Figure 5 - Analog Output Terminal Block Connections

4. External Input (VDC) – Three analog inputs (EXT INPUT 1-3) are provided for connection of remote input devices such as optional oxygen depletion sensors (Figure 6).

5. Remote IR Input (mA) – Two analog inputs (REMOTE IR INPUT 1 & 2) are provided for connection of Haloguard Remote Expansion Modules (Figure 6). Each terminal block has connections for both channel (CHA), and ppm (SIG) input from the remote modules.

6. Uninterruptible Power Supply (Optional) – Make sure UPS is fully charged. Plug UPS into power supply, turn switch ON. Connect Haloguard III to UPS, with power cord provided.

c. Powering Up:Rev 1.2h 6

On power-up, SYSTEM WARM-UP and 20 minute count down will appear on LCD. For 20 minutes after power up pump, all alarms, and relays are automatically disabled. Whenever power is disrupted, SYSTEM WARM-UP mode will be automatic (unless optional UPS is supplied) to protect against false alarms. Allow 1 hour for complete warm-up from cold start.

Rev 1.2h 7

Figure 6 - Circuit Board Layout(Shown with optional 8 Point Scanner)

1 2 3 4 5 6 7 8

1 2 3 4 5

1 2 3 4 5 6 7 8

AIR SAMPLE TUBING INLET PORTS

LCD DISPLAY

AIR FILTER

SAMPLE DRAW PUMP(UNDER PC BOARD)

RUNSETUPTEST

ALARMCAL

SPANJP5

RESTART

MIC

ROPR

OCES

SOR

RELAY

RELAY

RELAY

RELAY

RELAY

RELAY

RELAY

VOLTAGE

VOLT

AGE

OUT

NOT

FUSE

D

POWE

READ

FAUL ALARM 1

ALARM 3

ALARM 2

8-PORT SCANNER

BLOCK

CELL COVER

CAUTIONDo not remove this cover

Trained service personnel onlyNo user serviceable components inside

CONFIGURATION JUMPERS

OXYGEN SENSOR CONNECTIONS

REMOTE IR SENSOR MODULE CONNECTIONS

ALARM & FAULT RELAY CONTACTS

ANALOG OUTPUT CONNECTIONS

CONFIGURATION PUSHBUTTONS

VALVE CONNECTORS

VOLTAGE ADJUSTMENT TRIM POTS

AUX POWER OUT

A/C POWER IN

SETUP and SYSTEM CONFIGURATION

Locate configuration jumpers on Figure 6. Select configuration settings from the following:

JP MODE/FUNCTIONRUN Select run for normal operation

SETUP Set gas type and number of active channelsTEST Sequentially activates all Alarm & Fault LED’s &

relaysALARM Set-point Adjustment for Alarms 1 thru 6.

Latch ON/OFFCAL Zero Calibration

SPAN For use only with span gas and calibration keyJP5 Factory only

Figure 7 – Setup & Configuration Jumper Settings

1. RUN – Normal operation jumper position. Replace jumper here when finished other modes.2. SETUP – Gas types and number of active channels will be pre-set at the factory (Figure 12).

To change gas type or activate a channel, first select the channel to activate with cursor using the UP and DOWN pushbuttons. Press ENTER then use the same pushbuttons to select the gas type for each channel. Be sure to press ENTER to select. “NONE” selected in the gas type menu will deactivate the channel (recommended if sample tubing and filter not present).

3. TEST- Select alarm to test with cursor by using the UP, DOWN, and ENTER pushbuttons.4. ALARM –Alarm levels will be pre-set at the factory (Figure 12). Select the ALARM (1-6)

to adjust with the cursor using the UP, DOWN, and ENTER pushbuttons. Use the same pushbuttons to change the alarm PPM set-point. “OFF” selected turns alarm off.

5. CAL – Install optional activated charcoal filter on channel 1; follow on screen directions for zero calibration using the ENTER pushbutton.

6. SPAN –Key and instructions for use are included with optional Span Gas Calibration Kit 7. JP5- Factory only.

System Configuration:1. Relay Latch Setup - Factory setting is unlatched mode; e.g., the alarm LED’s and relays will

return to a normal status when gas concentration goes below alarm set-point. To select latched mode, move RUN jumper to ALARM setting then select LATCH mode with the cursor using the UP, DOWN, and ENTER pushbuttons. LATCH ON appears on the LCD Display. Latched mode requires pressing SILENCE/ RESET button to clear alarms.

2. Analog Output (optional) is factory set at 0-5VDC or 4-20mA as ordered. On voltage analog, use VADJ (PPM & CHAN) trim pots (Figure 6) to adjust voltage for up to 0-10VDC range.

3. LCD display adjustment potentiometer changes brightness (Figure 6).4. Two, Four or Eight Point Scanner - (Optional) Scanner is factory installed. Scanner

automatically sequences through each port (1-2, 1-4 or 1-8) at 2.5 min. per port sample rate.5. Adjust Display Scan Rate - Rate is factory set at 5 seconds per point. Rate is adjustable from

1-10 seconds. To change scan display rate press ENTER pushbutton from RUN mode; adjust using UP and DOWN; press ENTER to return to RUN mode.

6. Manual Scan - While in RUN Mode, Press MANUAL button on side of controller. Display shows M. Each time the button is pressed; display will advance to next sample point and show the last ppm reading. Controller will return to automatic sequencing within 2 minutes.

Rev 1.2h 8

INSTALLATION OF OPTIONAL REMOTE IR SENSOR (EXPANSION) MODULE

Refer to FIGURE 4, 6, 8, and 9 before proceeding.DO NOT CUT SUPPLIED CABLE

Controller is provided with 18” cable with DIN connector and expansion module is provided with 6-1/2’ cable for connection. If cable extension is required we recommend 3-conductor, 18-gage cable with foil shield, Carol C2535 or equal. Use 3/4” conduit if required. Maximum 1000’ length. To Extend Cable: Remove 18” cable with DIN connector from controller circuit board terminal block marked REMOTE INPUT 1 (or REMOTE INPUT 2). Splice or solder extension cable to end of 18” cable. Reconnect extended sensor cable to terminal block on circuit board of controller.

Terminal18” cable

Wire ColorExtension

Wire ColorRemote

FunctionCHA Red Red Channel #SIG White White PPMGND Black Black GroundGND Black/Bare Bare Shield

Notes - CHA Terminal is used for expansion modules with multi-channel scanner only. Shield wire is connected to GND on the Haloguard Controller side only.

Figure 8 – Remote Sensor Expansion Module Wiring Connections

To avoid nuisance alarms remove “AUD” alarm jumper in Haloguard III before beginning.

To compensate for line losses adjust signal voltage with a digital VOM as follows:1. Open cover on Remote IR expansion module. Move jumper from RUN to SETUP. Wait

approximately 1 minute before proceeding. (Display of Haloguard III shows SETUP.)2. Open cover on Haloguard III controller3. With VOM on 5 VDC scale, place VOM probe on SIG (+) and GND (-) Test points on

Haloguard III Main Board (Figure 6). Adjust ADJ1 or ADJ2 potentiometer with screwdriver until it reads 4.975 +/- 0.025 VDC.

4. If Remote expansion module is provided with scanner, lock the scanner on channel 1 using the jumper provided (Figure 9) on the Scanner Circuit Board. With VOM on 5 VDC scale, place VOM probe on CHA (+) and GND (-) Test points on Haloguard III Main Board (see Figure 6). Adjust ADJ4 or ADJ5 potentiometer with screwdriver until it reads 1.0 +/- 0.05 VDC.

5. Move scanner channel jumper in expansion module back to its original position.6. Move jumper in expansion module back to RUN. Replace AUD jumper in Haloguard controller.

Rev 1.2h 9

Lower Circuit Board

IR Module Run/Setup Jumper

DO NOT ADJUST POTS

Figure 9 – Remote IR Sensor Expansion Module Circuit Board

Cable to Controller(DO NOT REMOVE)

Digital Calibrator Connector Pins

Scanner Circuit Boards

RedWhiteBlack

RUNJ2SETUP

1 4

Scanner Channel Jumper

CALIBRATION

Haloguard III monitors are factory calibrated to the primary gas of interest. Field calibration is not required for operation in typical machine room environments during the first twelve months of operation even if a change in gas type is required.

For those who wish to check the factory calibration or change the gas type, an optional Span Gas Calibration Kit is available. Instructions for use are included with kit.

TESTING

The Haloguard III should be tested at start-up, after any changes to alarm protocol, and after each alarm level condition has been corrected. During testing, display will indicate ALARM TEST

a. Alarm Test – Enter TEST mode with jumper, select alarm with cursor by using the UP, DOWN, and ENTER pushbuttons. Check all alarms sequentially. Alarm relays, lights, audible, analog outputs, and remote alarms (if equipped) will activate if selected.

b. Reset Test - Push RESET/SILENCE button; alarm relays, audible and remote alarms (if equipped) will become inactive for 20 minutes. Display will read RESET/SILENCE and indicate minutes to completion of reset period.

TROUBLESHOOTING

The most frequent cause of nuisance alarms and faults is improper set-up, primarily due to:a. Failure to install in accordance with instructions.b. Not allowing sufficient warm-up time.c. Poor sensor location.

To check Zero Calibration, fill a clean plastic trash bag with clean outside air, tie off with twist-tie, let sample stabilize inside for 15 - 20 minutes. Insert sample tube into bag. For models equipped with scanner allow up to 2.5 minutes per channel for clean air sample analysis.

Observe LCD response; if displayed PPM value changes to near 0 PPM, the Haloguard III is detecting the presence of the gas of interest or another (interfering) gas in the room which absorbs infrared light at the same frequency.

Remove sample tube from bag and observe LCD response. If displayed PPM value moves higher, look for refrigerant leaks or possible sources of interfering gases (See “BEFORE INSTALLATION” section) and relocate sample point. Keep in mind that the Haloguard III is much more sensitive than hand held leak detectors, it may detect a leak when hand held units show no response.

SERVICE & ASSISTANCE

We wish to aid with any problems you might experience with the Haloguard III. When contacting Thermal Gas Systems, Inc. Service Department, please have the following information ready:

1. Model Number and Serial Number.2. Description of the problem.3. Remove cover. Place RUN jumper on ALARM and record settings. Place jumper on SETUP and

record settings. Place jumper on JP5 and record settings.4. Advise the condition of all LED’s and the information displayed on the LCD

It may be necessary to return the Haloguard III to Thermal Gas Systems, Inc. for service. Before returning unit, please obtain a Return Merchandise Authorization (RMA) from us. Carefully pack the

Rev 1.2h 10

Haloguard IR for shipping, as Thermal Gas Systems, Inc. cannot be responsible for damage incurred in transit. Please mark the top of the shipping carton with the RMA number assigned to the return. Address all returns to:

Thermal Gas Systems, Inc. Service Department11285 Elkins Road, Bldg. H-1, Roswell, GA 30076

MAINTENANCE

The Haloguard III refrigerant leak monitor is designed to provide long and trouble-free operation in normal machine room environments. Minimal maintenance is required. Self-diagnostics will indicate the cause of any unusual malfunction. To maintain appearance, clean the exterior with a soft, damp cloth. Do not use solvents, soaps or polishes.

Annual maintenance should include the following:Inspect internal sample filters for discoloration (dirt build-up). Replace as necessaryInspect all end-of-line filter(s) for dirt/ dust build-up. Replace as necessaryInspect all tubing for brittleness, seal, and holes. Replace as needed.Inspect all screws and terminal blocks for looseness. Tighten as needed.Expose the sensor to clean air and span gas sources. Recalibrate as needed.

OBTAINING REPLACEMENT PARTS

To obtain spare or replacement parts and/or service and assistance please contact Thermal Gas Systems directly by email at service@thermalgas.com or phone at 770-667-3865.

Description Part No.Internal Filter, element A702AExternal (EOL) Filter, element A703ASwitcher Valve A714Pressure Switch A708Scanner Valve A713Scanner, 4-station Upgrade Kit A502AScanner, 8-station Upgrade Kit A503A

****IMPORTANT****USE ONLY GENUINE THERMAL GAS SYSTEMS REPLACEMENT PARTS WHEN PERFORMING ANY MAINTENANCE PROCEDURES. FAILURE TO DO SO MAY SERIOUSLY IMPAIR UNIT PERFORMANCE. REPAIR OR ALTERATION OF THE HALOGUARD III BEYOND THE SCOPE OF THESE INSTRUCTIONS OR BY ANYONE OTHER THAN AUTHORIZED THERMAL GAS SYSTEMS SERVICE PERSONNEL, COULD CAUSE THE PRODUCT TO FAIL TO PERFORM AS DESIGNED AND PERSONS WHO RELY ON THIS PRODUCT FOR THEIR SAFETY COULD SUSTAIN SERIOUS PERSONAL INJURY OR DEATH.

Rev 1.2h

Description Part No.Audible Alarm, Local A603Strobe Alarm, Local A607Audible Alarm, Remote A605Strobe Alarm, Remote A606Combination Audible/Strobe Alarm, A604Span Gas Calibration Kit A204Microprocessor A704

11

Figure 11 - AccessoriesFigure 10 – Replacement Parts

SPECIFICATIONS

Technology: Wide bandwidth, Photoacoustic Infrared (PIR)Electrical Supply: 100-240VAC, 50-60 HzReplaceable Fuse: 3A / 240V; fast actingAlarm Outputs: Six (6) Alarm-level contacts, Form-C, 240 VAC, 10A resistiveFault Output: One (1) Fault contact; Form-C, 240 VAC, 10A resistive, normally energizedAnalog Output (Optional): Two (2) independent 0-5, 0-10VDC or 4 - 20mAReadout: Digital LCD; displays channel number, ppm, gas type, and fault diagnosticsDisplay Resolution: 1 ppm - full scaleDisplay Range: 0 - 1000 ppm - all refrigerantsOperating Conditions: 32oF to 122oF (0°C to 50°C) and 0-95% RH, non-condensingFault Diagnostics: Indicator light and LCD readout (also available through optional analog output)Enclosure: NEMA 250: Type-12 standard, Type-4 (optional)Weight: NEMA-12: 23 lbs. (10.4 kg.) NEMA-4: 28 lbs. (12.7 kg.)Dimensions: NEMA-12: 12” W x 14” H x 4.5” D (30.48 cm x 35.56 cm x 11.43 cm)

NEMA-4: 12” W x 14” H x 6” D (30.48 cm x 35.56 cm x 15.24 cm) Sensitivity: 20 ppm - all refrigerantsSample Rate: 3.0 liter/min free air; 1.5 liter/min with 500’ x .125” ID sample tubingResponse Time: <1 minute for single-point, <2.5 minutes per point with optional multi-channel scannerAgency Approvals: ASHRAE-15 Compliant Electrical Safety Conforms to UL/CSA/EU 61010-1 EMC Compatibility Conforms to FCC Part 15 B, ICES-003:Issue 5, ANSI C63.4:2009; EN 61326-1

FACTORY SETTINGS

The following parameters have been preset and are specific to the instrument whose serial number appears on the cover of this manual.

Alarm PPM

1*

2

3

4

5

6

Figure 12 – Initial Factory Settings for Gas Type & Alarm PPM Levels

* - 50 PPM TWA alarm is factory preset for R-123, if selected, and engages this relay. The instantaneous alarm level setting is shown here.

APPENDIX A

ANALOG OUTPUT DATA TRANSLATION

PPM & FAULT DATA VALUESTo calculate the analog outputs of the display value (PPM) use the following formulas.

For Voltage out: Vout = ((PPM*56) +3277) * 7.629E-05For Current out: Iout = [((PPM*56) +3277) * 2.441E-04]+4mA

Display PPM values:

PPM Vout (V) Iout (mA) Vterminated*

0 0.25 4.80 1.20

100 0.68 6.17 1.54

200 1.10 7.53 1.88

300 1.53 8.90 2.23

400 1.96 10.27 2.57

500 2.39 11.64 2.91

600 2.81 13.00 3.25

700 3.24 14.37 3.59

800 3.67 15.74 3.93

900 4.10 17.10 4.28

1000 4.52 18.47 4.62

Display Fault values:

Fault Vout (V) Iout (mA) Vterminated*

Remote Discontinuity 0.000 4.00 1.00Off Scale 4.575 18.64 4.66

Remote EE Error 4.625 18.86Flow Failure 4.675 18.96 4.74

Low Temperature 4.725 19.12 4.78Lamp Failure 4.775 19.28 4.82

Chopper Failure 4.825 19.44 4.86Scanner Stopped 4.875 19.60 4.90

Remote Channel Error 4.925 19.76 4.94Remote In Setup 4.975 19.92 4.98

* Voltage resulting from termination of Current out with a 250 Ohm resistor.

ANALOG OUTPUT DATA TRANSLATION

CHANNEL DATA VALUES

Channel Voltage (V) Current (mA) Vterminated*

1 0.20 4.64 1.16

2 0.40 5.28 1.32

3 0.60 5.92 1.48

4 0.80 6.56 1.64

5 1.00 7.20 1.80

6 1.20 7.84 1.96

7 1.40 8.48 2.12

8 1.60 9.12 2.28

9 1.80 9.76 2.44

10 2.00 10.40 2.60

11 2.20 11.04 2.76

12 2.40 11.68 2.92

13 2.60 12.32 3.08

14 2.80 12.96 3.24

15 3.00 13.60 3.40

16 3.20 14.24 3.56

17 3.40 14.88 3.72

18 3.60 15.52 3.88

19 3.80 16.16 4.04

20 4.00 16.80 4.20

21 4.20 17.44 4.36

22 4.40 18.08 4.52

23 4.60 18.72 4.68

24 4.80 19.36 4.84

* Voltage resulting from termination of Current out with a 250 Ohm resistor.